How can I change the current domain-name of an existing Windows 2008 Server?

We named a newly installed Windows 2008 Server's Domain (with AD) testserver.internal and we'd like to change that domain-name to a new production-name, but it seems we cannot change the domain-name. Anyone know where to do this? We've looked around in AD Domains and Trusts in Properties but cannot find anywhere to do that.
emspAsked:
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tigermattConnect With a Mentor Commented:

There are tools available from Microsoft to do this. The functionality was introduced properly in Windows Server 2003, and has been ported to Server 2008. It is known as the rendom.exe utility, which you can find on your Server 2008 Domain Controller at %windir%\system32\rendom.exe, so probably C:\WINDOWS\system32\rendom.exe.

I must warn you at this stage that the procedure has been known to go wrong and cause entire Active Directory environments to become corrupt, so it isn't something to be taken lightly. This is the reason why many companies still use their old company name for their domain name, because they simply do not want the hassle of having to run through a rename.

These documents may be of use:
http://download.microsoft.com/download/9/6/5/965e6899-e086-4b3e-8ed6-516ea07ea225/Domain-Rename-Intro.doc
http://download.microsoft.com/download/c/f/c/cfcbff04-97ca-4fca-9e8c-3a9c90a2a2e2/Domain-Rename-Procedure.doc

Hope this helps!
-tigermatt
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emspAuthor Commented:
Thanks, we'll look into this - or eventually just drop renaming it as the server is already in a production-environment and we definitely dont want it to be messed up. Thanks.
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